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Black hole quiz: test your knowledge
Ten questions, from the horizon to gravitational waves. Every answer is explained: even when you are wrong, you learn something.
Updated 8 October 2026
Question 1 of 10
Keep exploring
- Black holes →How black holes form, which types exist, from Gaia BH1 to M87*, and how we photographed and heard them.
- Falling in →Spaghettification, time dilation, crossing the horizon: falling into a black hole step by step, with a gravitational lensing render.
- Hawking radiation →The 1974 discovery that gave black holes a temperature, Hawking's formula and the evaporation time, explained simply.
- Teachers →Ready-to-use activities about black holes: orders of magnitude, time dilation, reading an EHT image.